Incredibly happy to see this. I struggled for about a month trying to get the beta running in VBox and finally gave up and installed the silly thing. No regrets, but it would have been nice to be able to play with it a bit before diving in head first, so to speak.

That sounds good. I gave F15 GNOME another try in a VBox VM but no dice. It is fully updated (64 bit) on a F15 64 bit host, but the VM still says it must go into fallback mode, even after installing guest additions.

Question: When you set up the virtual machine, what did you use for the Display settings? I set it up for 64 MB of display memory and made sure the Enable 3D Acceleration button was checked.
Before I changed the display settings, it behaved much as you said. I am using it with an Nvidia GeForce GT 220 /1GB card using the Nvidia drivers.

__________________
StephenH

"We must understand the reality that just because our culture claims certain things are true it does not mean they are!" --M. Liederbach

Question: When you set up the virtual machine, what did you use for the Display settings? I set it up for 64 MB of display memory and made sure the Enable 3D Acceleration button was checked.
Before I changed the display settings, it behaved much as you said. I am using it with an Nvidia GeForce GT 220 /1GB card using the Nvidia drivers.

I checked the "Enable 3D Acceleration" checkbox and increased the Video memory size to 128MB before installing the guest.
I'm using the proprietary nvidia drivers from RPMfusion.

If I run (gnome-shell --replace and mutter --replace) in the Terminal from the fall-back mode, I get the following:

I had just installed F15, then installed GCC, dkms, kernel-headers, and kernal-devel. I then rebooted and tried to install the guest additions, but it kept failing. It installed the latest kernel-headers, but the kernel was still the original. I did the updates, rebooted, and then installed the guest additions, which went through fine.

After that, the Gnome Shell started up, and I was able to resize the window to be more what I wanted.

I guess I should add that I am running Fedora 14 x86_64 and VirtualBox 4.08, not VirtualBox-OSE. My Fedora 15 guest is also 64 bit.

My machine is based on an AMD Phenom 9850 with 8 GB RAM, of which I dedicated one processor and 2 GB RAM to the virtual machine. I don't know if having IO-APIC checked makes a difference in this.

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__________________
StephenH

"We must understand the reality that just because our culture claims certain things are true it does not mean they are!" --M. Liederbach

I had just installed F15, then installed GCC, dkms, kernel-headers, and kernal-devel. I then rebooted and tried to install the guest additions, but it kept failing. It installed the latest kernel-headers, but the kernel was still the original. I did the updates, rebooted, and then installed the guest additions, which went through fine.

After that, the Gnome Shell started up, and I was able to resize the window to be more what I wanted.

I guess I should add that I am running Fedora 14 x86_64 and VirtualBox 4.08, not VirtualBox-OSE. My Fedora 15 guest is also 64 bit.

My machine is based on an AMD Phenom 9850 with 8 GB RAM, of which I dedicated one processor and 2 GB RAM to the virtual machine. I don't know if having IO-APIC checked makes a difference in this.

I couldn't get it to work either. However, didn't try very hard. Installed F15, guest additions, but as I don't use Gnome, it was more an exercise to see if it would work--when it went back into fallback mode, stopped trying.